Struct io_arrays::ArrayReader

pub struct ArrayReader { /* private fields */ }

A random-access input source.

Implementations

impl ArrayReader

pub fn file<Filelike: IntoFilelike + Read + Seek>(filelike: Filelike) -> Self

Convert a File into a ArrayReader.

pub fn bytes(bytes: &[u8]) -> Result<Self>

Copy a slice of bytes into a memory buffer to allow it to be accessed in the manner of an array.

Trait Implementations

impl Array for &ArrayReader

fn metadata(&self) -> Result<Metadata>

Return the Metadata for the array. This is similar to std::fs::File::metadata, though it returns fewer fields since the underlying device may not be an actual filesystem inode.

fn advise(&self, offset: u64, len: u64, advice: Advice) -> Result<()>

Announce the expected access pattern of the data at the given offset.

impl Array for ArrayReader

fn metadata(&self) -> Result<Metadata>

Return the Metadata for the array. This is similar to std::fs::File::metadata, though it returns fewer fields since the underlying device may not be an actual filesystem inode.

fn advise(&self, offset: u64, len: u64, advice: Advice) -> Result<()>

Announce the expected access pattern of the data at the given offset.

impl AsHandle for ArrayReader

fn as_handle(&self) -> BorrowedHandle<'_>

Borrows the handle.

impl AsRawHandle for ArrayReader

fn as_raw_handle(&self) -> RawHandle

Extracts the raw handle.

impl AsRawHandleOrSocket for ArrayReader

fn as_raw_handle_or_socket(&self) -> RawHandleOrSocket

Like AsRawHandle::as_raw_handle and AsRawSocket::as_raw_socket but can return either type.

impl Debug for ArrayReader

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl ReadAt for ArrayReader

fn read_at(&self, buf: &mut [u8], offset: u64) -> Result<usize>

Reads a number of bytes starting from a given offset.

fn read_exact_at(&self, buf: &mut [u8], offset: u64) -> Result<()>

Reads the exact number of byte required to fill buf from the given offset.

fn read_vectored_at(
    &self,
    bufs: &mut [IoSliceMut<'_>],
    offset: u64
) -> Result<usize>

Is to read_vectored what read_at is to read.

fn read_exact_vectored_at(
    &self,
    bufs: &mut [IoSliceMut<'_>],
    offset: u64
) -> Result<()>

Is to read_exact_vectored what read_exact_at is to read_exact.

fn is_read_vectored_at(&self) -> bool

Determines if Self has an efficient read_vectored_at implementation.

fn read_via_stream_at(&self, offset: u64) -> Result<StreamReader>

Create a StreamReader which reads from the array at the given offset.